J/AJ/162/147 Rotation periods of 43 TOIs with Evryscope and TESS (Howard+, 2021)
Rotation periods of TESS Objects of Interest from the Magellan-TESS survey with
multiband photometry from Evryscope and TESS.
Howard W.S., Teske J., Corbett H., Law N.M., Wang S.X., Ratzloff J.K.,
Galliher N.W., Gonzalez R., Soto A.V., Glazier A.L., Haislip J.
<Astron. J., 162, 147-147 (2021)>
=2021AJ....162..147H 2021AJ....162..147H (SIMBAD/NED BibCode)
ADC_Keywords: Exoplanets; Photometry, infrared; Optical; Spectral types
Keywords: Stellar activity; Radial velocity; Exoplanet astronomy; Sky surveys
Starspots
Abstract:
Stellar radial-velocity (RV) jitter due to surface activity may bias
the RV semiamplitude and mass of rocky planets. The amplitude of the
jitter may be estimated from the uncertainty in the rotation period,
allowing the mass to be more accurately obtained. We find candidate
rotation periods for 17 out of 35 TESS Objects of Interest (TOI)
hosting <3R⊕ planets as part of the Magellan-TESS survey, which
is the first-ever statistically robust study of exoplanet masses and
radii across the photoevaporation gap. Seven periods are ≳3σ
detections, two are ≳1.5σ, and eight show plausible
variability, but the periods remain unconfirmed. The other 18 TOIs are
nondetections. Candidate rotators include the host stars of the
confirmed planets L168-9b, the HD21749 system, LTT1445Ab, TOI1062b,
and the L98-59 system. Thirteen candidates have no counterpart in the
1000 TOI rotation catalog of Canto Martins et al. We find periods for
G3-M3 dwarfs using combined light curves from TESS and the Evryscope
all-sky array of small telescopes, sometimes with longer periods than
would be possible with TESS alone. Secure periods range from 1.4 to 26
days with Evryscope-measured photometric amplitudes as small as
2.1mmag in g' . We also apply Monte Carlo sampling and a Gaussian
process stellar activity model from exoplanet to the TESS light curves
of six TOIs to confirm the Evryscope periods.
Description:
Evryscope-South is located at Cerro Tololo Inter-American Observatory
in Chile, and Evryscope-North is located at Mount Laguna Observatory
in California, USA. Each Evryscope unit is an all sky array of small
telescopes with an instantaneous footprint of 8150 square degrees,
covering a total of 18400 square degrees as the Earth rotates each
night.
Transiting Exoplanets Survey Satellite (TESS) observed each sector
continuously with four 10.5cm optical telescopes in a red (600-1000nm)
bandpass for 28 days at 21"/pixel.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 131 43 Rotation periods of 1-3R⊕ TOIs observed
by Evryscope and TESS
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See also:
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
J/ApJ/801/79 : 10yr GJ176 radial velocities &VR photometry (Robertson+, 2015)
J/AJ/152/204 : HARPS-N radial velocities of HD 179070 (Lopez-Morales+, 2016)
J/ApJ/821/93 : Rotation & Galactic kinematics of mid M dwarfs (Newton+, 2016)
J/A+A/600/A13 : HARPS Mdwarf sample magnetic activity (Astudillo-Defru+, 2017)
J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)
J/MNRAS/472/1618 : Kepler study of starspot lifetimes (Giles+, 2017)
J/AJ/155/39 : Variability prop of TIC sources with KELT (Oelkers+, 2018)
J/AJ/155/203 : HARPS-N RVs & activity indicators Kepler-1655 (Haywood+, 2018)
J/AJ/156/18 : APOGEE DR14:Binary comp of evolved stars (Price-Whelan+, 2018)
J/AJ/156/217 : Stellar properties M dwarfs in MEarth-South (Newton+, 2018)
J/AJ/156/264 : California-Kepler Survey VII Planet radius gap (Fulton+, 2018)
J/A+A/629/A111 : L 98-59 (TOI 175) HARPS observations (Cloutier+, 2019)
J/AJ/157/97 : Rvel measurements of K2-3 & GJ3470 (Kosiarek+, 2019)
J/AJ/157/116 : Rvel of K2-291 with HIRES & HARPS-N (Kosiarek+, 2019)
J/A+A/622/L7 : GJ143 and HD23472 radial velocity curves (Trifonov+, 2019)
J/ApJ/875/29 : Spectroscopic analysis of the CKS sample. I. (Martinez+, 2019)
J/ApJ/881/9 : EvryFlare. I. Cool stars's flares southern sky (Howard+, 2019)
J/PASP/131/G5001 : New variable stars and eclipsing binaries (Ratzloff+, 2019)
J/A+A/636/A58 : L 168-9 radial velocity curve (Astudillo-Defru+, 2020)
J/ApJ/890/23 : NUV and FUV measurements of planet host stars (Loyd+, 2020)
J/ApJ/895/140 : EvryFlare. II. Parameters 122 cool flare stars (Howard+, 2020)
J/ApJS/250/20 : Rotation periods in TESS objects of interest (Canto+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 F7.2 --- TOI TESS Object of Interest
9- 14 F6.3 d PRot [1.39/64.8]? Stellar rotation period
16- 20 F5.3 d e_PRot [0.002/7]? Uncertainty in PRot
22 A1 --- Grade Quality grade
24- 28 F5.1 % FAPtot [0/100]? Total False Alarm Probability
30- 34 F5.1 --- FAPBest [1/100]? Best False Alarm Probability (1)
36- 40 F5.1 --- FAPCon [10/100]? Conservative False Alarm Probability
42- 46 F5.1 --- FAPLS [0/100]? Lomb-Scargle False Alarm Probability
48- 52 A5 --- SpType Spectral type
54- 61 A8 --- TESS Source of the TESS light curve (2)
63- 69 F7.5 mag TAmp [0.0006/0.01]? TESS-measured sinusoidal
amplitude of rotation in ΔT mag
71- 77 F7.5 mag EAmp [0.001/0.01]? Evryscope-measured sinusoidal
amplitude of rotation in Δg' mag
79- 82 F4.2 yr Dur [0/2.97] Duration of Evryscope observations
84- 89 I6 --- Num [0/104018] Number of Evryscope epochs
91- 93 A3 --- E-White Pre-whiten the Evryscope data?
95- 99 F5.3 --- E-WhiteMin [0.02/6]? Minimum Evryscope pre-whitened
101-104 F4.1 --- E-WhiteMax [4/35]? Maximum Evryscope pre-whitened
106-113 A8 --- E-Pipe Evryscope pipeline
115-117 A3 --- T-White Pre-whiten the TESS data? (3)
119 I1 --- T-WhiteMax [1/6]? Maximum TESS pre-whitened
121-125 F5.2 d GPPRot [1.4/18]? Gaussian Process measured rotation
period
127-131 F5.3 d e_GPPRot [0.004/2.1]? Uncertainty in GPPRot
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Note (1): For phase offsets only.
Note (2): A 2min cadence SAP FLUX or 30min cadence eleanor data product.
Note (3): TESS light curve has had likely systematics-affected epochs
removed and/or been pre-whitened.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 13-Dec-2021